Men's 100% Merino Wool Quarter-Zip
Men's 100% Merino Wool Quarter-Zip
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- Free shipping over $100
- 30-day guarantee
- RWS-certified
100% Australian merino wool. 18.5-micron, 150-gsm. No polyester, no blends. Just nature's most advanced performance fiber.
Odor-resistant
Temperature-regulating
Lightweight & Breathable
Moisture Wicking
- Biodegradable
- Machine Washable
Size and Fit
Size and Fit
Our merino wool activewear is designed for a comfortable, athletic fit that moves with your body. If you'd like a more relaxed fit, we recommend sizing up. See sizing chart below for detailed guidelines.
Shipping & Returns
Shipping & Returns
Ships within 1–2 business days. Standard delivery in 3–8 business days. Free on orders over $100.
30-day satisfaction guarantee. If you're not happy, return for a full refund minus $8 shipping (waived for exchanges).
Fabric Care
Fabric Care
Machine wash on a gentle cycle in cool water (30°C / 86°F or below) with a wool-specific or mild detergent. Avoid fabric softener and bleach. Turn pieces inside out before washing to minimize surface friction.
Lay flat to dry.
Sizing Charts
Sizing Chart: Men
| Size | Chest Measurement |
|---|---|
| Small | 33-35 |
| Medium | 35-37 |
| Large | 37-40 |
| XL | 40-43 |
How to Measure
Chest: Measure around the fullest part of your chest, keeping the tape measure level and snug but not tight.
Fit: Our merino wool activewear is designed for a comfortable, athletic fit that moves with your body.
Between Sizes? If you're between sizes, we recommend sizing up for a more relaxed fit or sizing down for a more fitted look.
Sizing Chart: Women
| Size | Dress Size | Chest | Cup Size |
|---|---|---|---|
| XS | 00-0 | 33-34 | 32A-B |
| Small | 2-4 | 35-36 | 34B-C |
| Medium | 6-8 | 37-39 | 34C-36C |
| Large | 10-12 | 39-40 | 36C-38B |
How to Measure
Chest: Measure around the fullest part of your chest, keeping the tape measure level and so tight.
Dress Size: Use your typical dress size as a reference point.
Cup Size: Reference guide for proper fit and support.
Fit: Our women's merino wool activewear is designed for a flattering, comfortable fit that moves with your body.
Between Sizes? If you're between sizes, we recommend sizing up for a more relaxed fit or sizing down for a more fitted look.
By Design
Constructed to let merino do what merino does best.
Oh micron you're so fine
At 18.5 microns our wool is classed as "extra-fine." Three times thinner than a human hair, the fiber bends, not pokes, against the skin, making for a luxuriously soft feel.
150gsm: the Goldilocks zone
At 150gsm, our fabric is about as lightweight as it can get while maintaining structural integrity, meaning the tenth mile feels as good as the first.
Strength in purpose
Light and soft? Definitely. Fragile? Not at all. The single-jersey knit of our shirts provides natural stretch without the spandex, enhancing your flow, not restricting it.
About our wool
Our wool comes from farms that adhere to the most stringent environmental and animal welfare standards in the world, and are certified RWS (Responsible Wool Standard).
Woolmark certification ensures that every fiber is traceable, from sheep to shirt.
Spun into extra-fine 18.5 microns and knit into a single-jersey fabric, the resulting garments are luxuriously soft and remarkably breathable.
Cut and sewn in facilities with BSCI and OEKO-TEX Standard 100 certifications, ensuring high standards of labor practices, environmental practices, and purity of fabric.
Why Merino Wool for Workouts?
Merino Wool
Polyester
Odor resistance
Natural
Chemical treatments
Temperature regulation
Adapts to body
Traps heat
End of life
Fully biodegradable
200+ years to break down
Moisture wicking
Absorbs 30% of weight
Surface only
Softness on skin
Extra-fine 18.5 micron
Plastic feel
FAQ
Why is this made from 100% merino wool?
Most merino activewear brands blend in nylon or polyester to cut costs. Even a small percentage of synthetic fabric reintroduces the problems you're trying to avoid: microplastic shedding, odor buildup, and a fabric that won't biodegrade. We skip the blends because merino already does what synthetics are engineered to imitate; it stretches, wicks, regulates temperature, and resists odor on its own.
What size should I get?
Our clothes are designed for a comfortable, athletic fit that moves with your body. If you'd like a more relaxed fit, we recommend sizing up.
How do I wash and care for merino?
Machine wash cold on a gentle cycle with a mild or wool-specific detergent. Lay flat to air dry. Because merino naturally resists odor, you can wear it 2–3 times between washes for most activities.
Is this see-through?
At 150gsm, the knit is lightweight but dense enough to be fully opaque across most colorways. Our lighter colors get a bit translucent, so we recommend layering them over a sports bra or undershirt.
Where are your clothes made?
Our merino wool comes from RWS-certified farms in Australia. Garments are manufactured in BSCI-audited facilities in Vietnam, ensuring fair labor practices and safe working conditions.
Can I exchange this if the fit isn't quite right?
Yes. We offer free exchanges within 30 days of delivery. Full refunds available for items in original condition, minus shipping.